Friction-top can.



PATBNTED JULY 1a, 1905.

J. G. HODGSON.

FRICTION TGP CAN.

APPLICATION FILED DEG. 5, 1904.

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PATENT OEEIcE.

JOHN G. HODGSON, OF MAYWOOD, ILLINOIS, ASSIGNOR TO AMERICAN (JAN COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

FRICTION-TOP CAN.

SPECIFICATION forming part of Letters Patent No. 795,126, dated July 18, 1905.

Application filed December 5, 1904:. Serial No. 235,464.

To all whom it may concern:

Be it known that I, JOHN G. HODGSON, a citi- V zen of the United States,residing in Maywood,

is a specification.

My invention relates to improvements in cans of the kind or class commonly known as friction-top cans or cans which are designed to be opened and closed a number of times as the contents are being used and which have a top or head furnished with a friction-seat adapted to receive a friction or slightly-wedging cover that is forced into the seat to tightly close the can by the tight close metal-t0- metal contact of the cover with the seatin the top or head of the can. Great difliculty has heretofore been experienced in cans of this kind or class in producing a liquid-tight closure or joint between the so-called frictiontop of the can and its so-called frictioncover, especially where the cans are filled with extremely permeable or fluid liquids, like turpentine, benzin, &c.

The object of my invention is to provide a so-called friction-top can of a simple, eflicient, durable, and economical construction which may be readily closed and sealed by simply forcing the cover in place and readily opened by simply prying off the frictioncover and which at the same time may be closed liquid-tight with certainty and reliability, so that substantially none of the cans will in practice prove to be defective or leaky.

My invention consists in the means 1 cmploy to practically accomplish this object or result-that is to say, it consists in a can having an annular top or head furnished with the customary integral seat wall or flange for the cover, having an inwardly-projecting flange provided with an upwardly-projecting flange terminating in a rounded or curved flange and constituting an elastic or spring-acting member, in combination with a friction-cover having an integral seat wall or flange tightly engaging the seat wall or flange of the cantop and provided with an inner upright wall In the accompanying drawings, forming a part of this specification, Figure 1 is a central vertical section of a friction-top can embodying my invention. Fig. 2 is a top or plan view. Fig. 3 is an enlarged detail vertical section, and Fig. 4 is a plan view with the friction-cover removed.

In said drawings, A represents the canbody, and O its bottom head, secured thereto by a soldered or other seam o.

B is the annular top, secured to the can-body by a soldered or other seam a. The annular top B has a marginal flange b for securing the same to the can-body and a raised bead or shoulder b to serve as a fulcrum in prying off the friction-cover D. The top B has an integral depending seat wall or flange b tightly engaging the corresponding seat wall or flange cl of the friction-cover D, these interengaging seatwalls Z2 d being preferably slightly wedging or tapering and the seatwall (1 of the cover being slightly larger than the seat-wall 6 of the can-top to insure a firm and tight gripping or anchorage of the two together when the cover D is forcibly pressed or driven home in the can-top B. The annular can-top B also has an inwardly-projecting flange 5 and an upwardly projecting flange b, terminating in a curved or rounded elastic or spring acting flange or member 6 The annular walls or flanges b and If and the inwardly-projecting flange 6 together form an annular recess or channel B in the can-top.

The friction-cover D is provided with marginal folded flanges d at its rim to strengthen the same and form a shoulder for prying off the cover. The friction-cover D has in addition to the friction seat wall or flange d an inwardly-projecting flange d and an upwardly-projecting flange d and a curved or rounded annular seat flange or wall (2*, which engages and forms a seat for the elastic or spring acting flange b of the top B. The flanges (1, 0V, and (Z of the friction-cover D form a raised annular rib on the under side of the friction-cover which fits in thannular recess or groove B of the friction-top, and as this annular rib on the cover is substantially rigid and unyielding, while the inner upright Wall d of the annular recess or channel B of the can-top is elastic and free to spring slightly inward as the cover D is forced snugly home, it produces an elastic or spring action between the interengaging members 6 d and 6 d and thus secures a liquid-tight closure with certainty and reliability. As the spring-pressure of the elastic flanges If 6 against the coacting cover-walls CV and d is chiefly in a horizontal direction, this spring-valve-acting pressure does not materially tend to press the cover ofl? or upward, and the tight wedging friction-grip between the upright walls 6 OZ and b d effectually counteract any upward component of pressure of the spring-acting member against its rounded seat 65 so that the cover remains securely anchored on the can. When the friction cover is pressed home on the top to close the same, there is a free space between the inwardly-projecting flange 0Z of the cover and the corresponding inwardly-projecting flange b of the top B, so that these flanges will not operate as stops to arrest the downward movement of the cover, and thus prevent the necessary close tight gripping or anchorage of the upright friction seat-walls b d of the top cover.

I claim 1. In a friction-top can, the combination with a top having a friction seat-wall provided with an inwardly-projecting flange and a reverse upwardly-projecting flange terminating in a curved spring-acting member, of a friction-cover having an upright friction seatwall, an inwardly-projecting flange and an upwardly-projecting flange having a rounded seat member, substantially as specified.

2. In a friction-top can, the combination with a top having a friction seat-wall provided with an inwardly-projecting flange and a reverse upwardly-projectin'g flange terminating in a curved spring-acting member, of a friction-cover having an upright friction seatwall, an inwardly-projecting flange and an upwardly-projecting flange having a rounded seat member, said can-top having a marginal raised rim to serve as a fulcrum in prying off the cover, substantially as specified.

3. In a friction-top can, the combination with a top having a friction seat-wall provided with an inwardly-projecting flange and a reverse upwardly-projecting flange terminating in a curved spring-acting member, of a friction cover having an upright friction seatwall, an inwardly-projecting flange and an upwardly-projecting flange having a rounded seat member, said can-top having a marginal raised rim to serve as a fulcrum in prying off the cover, and said friction-cover having a folded marginal rim, substantially as specifled.

4. In a friction-top can, the combination with a top having a sunken recess, the outer upright wall of said recess serving as a friction-seat, of a friction-cover having a corresponding annular channel, the upright walls of which engage the upright walls of the annular channel in the top, the inner upright wall of the top having a curved spring-acting member, and the friction-cover having a corresponding annular seat-wall, substantially as specified.

JOHN G. HODGSON. Witnesses:

H. M. MUNDAY, P. ABRAMS. 

